Kisaragi Earphone jack accessories035 crescent - Crystal Aurora (Gold Court) Such as mobile phones. It is a commodity that can be attached to the earphone jack (diameter 3.5 mm).Regardless of manufacturer or series, earphone jack diameter is generally 3.5 mm.3.5mm0.1378inch. Luxury Swarovski Crystal It is a strange crystal that Crystal Aurora. Designed by Kisaragi Made in Japan